Lighting fixture arm



FIG. 1 is a perspective view of a lighting fixture arm comprising the new design;

FIG. 2 is a front view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a perspective view of a second embodiment of a lighting fixture arm comprising the new design;

FIG. 7 is a front view of the lighting fixture arm of claim 6;

FIG. 8 is a right side view of the lighting fixture arm of claim 6;

FIG. 9 is a top view of the lighting fixture arm of claim 6; and,

FIG. 10 is a bottom view of the lighting fixture arm of claim 6.

The structure shown in light, closely spaced dotted lines represents environmental structure and forms no part of the claimed design 

The ornamental design for a light fixture arm, as shown and described. 